# -*- coding: utf8 -*-
#
# ***** BEGIN GPL LICENSE BLOCK *****
#
# --------------------------------------------------------------------------
# Blender 2.5 Exporter Framework
# --------------------------------------------------------------------------
#
# Authors:
# Doug Hammond
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, see <http://www.gnu.org/licenses/>.
#
# ***** END GPL LICENCE BLOCK *****
#
import bpy

from .validate import Visibility

class EF_OT_msg(bpy.types.Operator):
	bl_idname = 'ef.msg'
	bl_label = 'Show UI Message'
	msg_type = bpy.props.StringProperty(default='INFO')
	msg_text = bpy.props.StringProperty(default='')
	def execute(self, context):
		self.report({self.properties.msg_type}, self.properties.msg_text)
		return {'FINISHED'}

def _get_item_from_context(context, path):
	for p in path:
		context = getattr(context, p)
	return context

class property_group_renderer(object):
	
	# Choose which custom property groups this panel should draw, and
	# where to find that property group in the active context
	display_property_groups = [
		# ( ('scene',), 'declarative_property_group name')
	]
	
	def draw(self, context):
		'''
		Sub-classes should override this if they need to display
		other (object-related) property groups
		'''
		for property_group_path, property_group_name in self.display_property_groups:
			ctx = _get_item_from_context(context, property_group_path)
			property_group = getattr(ctx, property_group_name)
			for p in property_group.controls:
				self.draw_column(p, self.layout, ctx, context, property_group=property_group)
			property_group.draw_callback(context)
	
	@staticmethod
	def property_reload():
		'''
		override this in sub classes to force data refresh upon scene reload
		'''
		pass
	
	def check_visibility(self, lookup_property, context, property_group):
		vt = Visibility(property_group)
		if lookup_property in property_group.visibility.keys():
			if hasattr(property_group, lookup_property):
				member = getattr(property_group, lookup_property)
			else:
				member = None
			return vt.test_logic(member, property_group.visibility[lookup_property])
		else:
			return True
			
	def draw_column(self, control_list_item, layout, context, supercontext=None, property_group=None):
		if type(control_list_item) is list:
			do_split = False
			
			found_percent = None
			for sp in control_list_item:
				if type(sp) is float:
					found_percent = sp
				elif type(sp) is list:
					for ssp in control_list_item:
						do_split = do_split and self.check_visibility(ssp, context, property_group)
				else:
					do_split = do_split or self.check_visibility(sp, context, property_group)
			
			if do_split:
				# print('split %s'%p)
				if found_percent is not None:
					fp = { 'percentage': found_percent }
					splt = layout.split(**fp)
				else:
					splt = layout.row(True)
				for sp in [s for s in control_list_item if type(s) in [str, list] ]:
					col2 = splt.column()
					self.draw_column(sp, col2, context, supercontext, property_group)
			#else:
			#	print('dont split %s'%p)
		else:
			if self.check_visibility(control_list_item, context, property_group):
				
				for current_property in property_group.properties:
					if current_property['attr'] == control_list_item:
						current_property_keys = current_property.keys() 
						if 'type' in current_property_keys:
							
							if current_property['type'] in ['int', 'float', 'float_vector', 'enum', 'string']:
								layout.prop(
									property_group,
									control_list_item,
									text		= current_property['name'],
									expand		= current_property['expand']		if 'expand'		in current_property_keys else False,
									slider		= current_property['slider']		if 'slider'		in current_property_keys else False,
									toggle		= current_property['toggle']		if 'toggle'		in current_property_keys else False,
									icon_only	= current_property['icon_only'] 	if 'icon_only'	in current_property_keys else False,
									event		= current_property['event']			if 'event'		in current_property_keys else False,
									full_event	= current_property['full_event']	if 'full_event'	in current_property_keys else False,
									emboss		= current_property['emboss']		if 'emboss'		in current_property_keys else True,
								)
							if current_property['type'] in ['bool']:
								layout.prop(
									property_group,
									control_list_item,
									text		= current_property['name'],
									toggle		= current_property['toggle']		if 'toggle'		in current_property_keys else False,
									icon_only	= current_property['icon_only']		if 'icon_only'	in current_property_keys else False,
									event		= current_property['event']			if 'event'		in current_property_keys else False,
									full_event	= current_property['full_event']	if 'full_event'	in current_property_keys else False,
									emboss		= current_property['emboss']		if 'emboss'		in current_property_keys else True,
								)
							elif current_property['type'] in ['operator']:
								layout.operator(current_property['operator'],
									text		= current_property['text'],
									icon		= current_property['icon']
								)
							
							elif current_property['type'] in ['text']:
								layout.label(
									text		= current_property['name']
								)
								
							elif current_property['type'] in ['template_list']:
								# row.template_list(idblock, "texture_slots", idblock, "active_texture_index", rows=2)
								layout.template_list(
									current_property['src'](supercontext, context),
									current_property['src_attr'],
									current_property['trg'](supercontext, context),
									current_property['trg_attr'],
									rows		= 4			if not 'rows'		in current_property_keys else current_property['rows'],
									maxrows		= 4			if not 'rows'		in current_property_keys else current_property['rows'],
									type		= 'DEFAULT'	if not 'list_type'	in current_property_keys else current_property['list_type']
								)
								
							elif current_property['type'] in ['prop_search']:
								#  split.prop_search(tex, "uv_layer", ob.data, "uv_textures", text="")
								layout.prop_search(
									current_property['trg'](supercontext, context),
									current_property['trg_attr'],
									current_property['src'](supercontext, context),
									current_property['src_attr'],
									text		= current_property['name'],
								)
						else:
							layout.prop(property_group, control_list_item)
						
						# Fire a draw callback if specified
						if 'draw' in current_property_keys:
							current_property['draw'](supercontext, context)
						
						break
